[INFO] fetching crate mdl_monkey 1.0.0...
[INFO] testing mdl_monkey-1.0.0 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate mdl_monkey 1.0.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate mdl_monkey 1.0.0 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mdl_monkey 1.0.0
[INFO] finished tweaking crates.io crate mdl_monkey 1.0.0
[INFO] tweaked toml for crates.io crate mdl_monkey 1.0.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate mdl_monkey 1.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c6c5045a0c18a387aecded0b19c0a733226ef8a263d7b601f23e4f39ba687577
[INFO] running `Command { std: "docker" "start" "-a" "c6c5045a0c18a387aecded0b19c0a733226ef8a263d7b601f23e4f39ba687577", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c6c5045a0c18a387aecded0b19c0a733226ef8a263d7b601f23e4f39ba687577", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6c5045a0c18a387aecded0b19c0a733226ef8a263d7b601f23e4f39ba687577", kill_on_drop: false }`
[INFO] [stdout] c6c5045a0c18a387aecded0b19c0a733226ef8a263d7b601f23e4f39ba687577
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 710689bc236748872d46b49fe6fdb5df3622e2acc2afc9c0332c763b233d748e
[INFO] running `Command { std: "docker" "start" "-a" "710689bc236748872d46b49fe6fdb5df3622e2acc2afc9c0332c763b233d748e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling unicode-width v0.1.6
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling mdl_monkey v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.47s
[INFO] running `Command { std: "docker" "inspect" "710689bc236748872d46b49fe6fdb5df3622e2acc2afc9c0332c763b233d748e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "710689bc236748872d46b49fe6fdb5df3622e2acc2afc9c0332c763b233d748e", kill_on_drop: false }`
[INFO] [stdout] 710689bc236748872d46b49fe6fdb5df3622e2acc2afc9c0332c763b233d748e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 23a120e1a00c5272a333da60e5bce5a6a63a4d96f593a6f44d06f9af1b956b66
[INFO] running `Command { std: "docker" "start" "-a" "23a120e1a00c5272a333da60e5bce5a6a63a4d96f593a6f44d06f9af1b956b66", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling mdl_monkey v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> tests/evaluator.rs:289:57
[INFO] [stdout]     |
[INFO] [stdout] 289 |     .expect_err("expected an error but none was found");;
[INFO] [stdout]     |                                                         ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.92s
[INFO] running `Command { std: "docker" "inspect" "23a120e1a00c5272a333da60e5bce5a6a63a4d96f593a6f44d06f9af1b956b66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23a120e1a00c5272a333da60e5bce5a6a63a4d96f593a6f44d06f9af1b956b66", kill_on_drop: false }`
[INFO] [stdout] 23a120e1a00c5272a333da60e5bce5a6a63a4d96f593a6f44d06f9af1b956b66
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4610fd47f2a36e561ebce9dc1bea5ac51f3c4a948be1b30086b04860e2b7ffd2
[INFO] running `Command { std: "docker" "start" "-a" "4610fd47f2a36e561ebce9dc1bea5ac51f3c4a948be1b30086b04860e2b7ffd2", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> tests/evaluator.rs:289:57
[INFO] [stderr]     |
[INFO] [stderr] 289 |     .expect_err("expected an error but none was found");;
[INFO] [stderr]     |                                                         ^ help: remove this semicolon
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `mdl_monkey` (test "evaluator") generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mdl_monkey-b61de726eae2f640)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/monkey-d3a2bd403af0cd77)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/ast.rs (/opt/rustwide/target/debug/deps/ast-d1ad96bfb0123d90)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/evaluator.rs (/opt/rustwide/target/debug/deps/evaluator-76a22534d54cc5d8)
[INFO] [stdout] running 1 test
[INFO] [stdout] test ast_display ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 27 tests
[INFO] [stdout] test evaluate_array_object ... ok
[INFO] [stdout] test evaluate_builtin_first ... ok
[INFO] [stdout] test evaluate_boolean_expression ... ok
[INFO] [stdout] test evaluate_builtin_last ... ok
[INFO] [stdout] test evaluate_builtin_first_errors ... ok
[INFO] [stdout] test evaluate_builtin_len_errors ... ok
[INFO] [stdout] test evaluate_builtin_len ... ok
[INFO] [stdout] test evaluate_builtin_last_errors ... ok
[INFO] [stdout] test evaluate_builtin_push ... ok
[INFO] [stdout] test evaluate_builtin_push_errors ... ok
[INFO] [stdout] test evaluate_function_object ... ok
[INFO] [stdout] test evaluate_array_index_objects ... ok
[INFO] [stdout] test evaluate_builtin_rest_errors ... ok
[INFO] [stdout] test evaluate_builtin_rest ... ok
[INFO] [stdout] test evaluate_hash_objects ... ok
[INFO] [stdout] test evaluate_float_expression ... ok
[INFO] [stdout] test evaluate_function_application_error ... ok
[INFO] [stdout] test evaluate_index_objects_errors ... ok
[INFO] [stdout] test evaluate_hash_index_objects ... ok
[INFO] [stdout] test evaluate_if_expression ... ok
[INFO] [stdout] test evaluate_let_statement_unknown_identifier ... ok
[INFO] [stdout] test evaluate_integer_expression ... ok
[INFO] [stdout] test evaluate_let_statement ... ok
[INFO] [stdout] test evaluate_prefix_expression ... ok
[INFO] [stdout] test evaluate_string_expression ... ok
[INFO] [stdout] test evaluate_function_application ... ok
[INFO] [stdout] test evaluate_return_statement ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 27 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/lexer.rs (/opt/rustwide/target/debug/deps/lexer-49c9ab92be2e41f0)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test lex_illegal_number ... ok
[INFO] [stdout] test lex_illegal_number_radix ... ok
[INFO] [stdout] test lex_integer_literals ... ok
[INFO] [stdout] test lex_string_unexpected_eof ... ok
[INFO] [stdout] test lex_next_token ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/parser.rs (/opt/rustwide/target/debug/deps/parser-e5e4d49af8c61f2d)
[INFO] [stdout] 
[INFO] [stdout] running 15 tests
[INFO] [stdout] test parse_array_literal ... ok
[INFO] [stdout] test parse_call_expressions ... ok
[INFO] [stdout] test parse_function_literals ... ok
[INFO] [stdout] test parse_float_literal_expression ... ok
[INFO] [stdout] test parse_identifier_expression ... ok
[INFO] [stdout] test parse_hash_expressions ... ok
[INFO] [stdout] test parse_if_expressions ... ok
[INFO] [stdout] test parse_infix_boolean_expressions ... ok
[INFO] [stdout] test parse_infix_integer_expressions ... ok
[INFO] [stdout] test parse_integer_literal_expression ... ok
[INFO] [stdout] test parse_prefix_boolean_expressions ... ok
[INFO] [stdout] test parse_prefix_integer_expressions ... ok
[INFO] [stdout] test parse_string_expression ... ok
[INFO] [stdout] test parse_operator_precedence ... ok
[INFO] [stdout] test parse_statements ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/token.rs (/opt/rustwide/target/debug/deps/token-d790c3181566d8d9)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test token_display ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mdl_monkey
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4610fd47f2a36e561ebce9dc1bea5ac51f3c4a948be1b30086b04860e2b7ffd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4610fd47f2a36e561ebce9dc1bea5ac51f3c4a948be1b30086b04860e2b7ffd2", kill_on_drop: false }`
[INFO] [stdout] 4610fd47f2a36e561ebce9dc1bea5ac51f3c4a948be1b30086b04860e2b7ffd2